Biomolecules practice · Medium

Read the following statements carefully and select the appropriate option given below.

(i) Plant cell wall consists of cellulose, hemicellulose, pectins and proteins.

(ii) As there are 20 types of amino acids, a protein is a heteropolymer and not a homopolymer.

(iii) Amino acids are organic compounds containing an amino group and a basic group as substituents on the same carbon.

(iv) The long protein chain is also folded upon itself like a hollow woollen ball, giving rise to the tertiary structure.

(v) In a polysaccharide, the individual monosaccharides are linked by a glycosidic bond.

A fragment of DNA has 480 nucleotides out of which 110 are those of Adenine. The number of cytosine nucleotides is

Carbohydrates, the most abundant biomolecules earth, are produced by

Select odd one w.r.t substances and their categories/functions.

Find the odd “Nitrogen base”

In all of the given carbon compounds heterocyclic rings can be found, except

The inorganic compounds like sulphate, phosphate etc are found in?

Biomolecules are constantly being changed into some other biomolecules and are made from ….

Choose the odd one w.r.t homopolysaccharide.

‘G’ in DNA strand base pairs with ‘C’ by 3… bonds

Catabolic and anabolic pathways are often coupled in cell. Why?

Which one of the following is a triglyceride?

Why metabolic pathways are comparable to automobile traffic in a city?

All the carbon compounds obtained from living tissues are named as

Statement-I : A protein is a heteropolymer

Statement-II : Each protein is a polymer of different aminoacids

Select the odd one w.r.t. homopolymers.

Almost all enzymes are … in nature

Jacob and Monod named some enzymes as allosteric, whose activity is regulated by

If a polysaccharide contains 6 Glucose monomeric units then what is the molecular formula of polysaccharide:

One of the following is a simple protein.

Select the wrong statement

Given below is a list of some polysaccharide
a. Cellulose b. Starch c. Glycogen d. Paper
Which of the following can hold ${I_2}$ molecules in the helical portion and produce colour with ${I_2}$ solution?

Find the odd one out.

Which of the following statements are incorrect?
I. Left end of a polysaccharide is called non-reducing end while right end is called reducing end
II. Starch and glycogen are branched molecules
III. Starch and glycogen are the reserve food materials of plants and animals, respectively
IV. Starch can hold iodine molecules in its helical secondary structure but cellulose being non-helical, cannot hold iodine

One of the similarities between DNA and RNA is that?

Phospholipids are

Enzymes are biocatalysts. They catalyse biochemical reactions.
In general they reduce activation energy of reactions. Many
physico-chemical processes are enzyme mediated. Some
examples of enzyme mediated reactions are given below. Tick
the wrong entry

Steroid hormones are similar in structure to?

Identify wheather the given conditions are anabolic or catabolic
I. Glucose → Lactic acid
II. Amino acids → Proteins

Which of the following statements are correct?
I. Relative abundance of carbon and hydrogen with respect to other elements is higher in any living organisms
II. Living organisms have more nitrogen and oxygen per unit mass than inanimate objects (e.g., earth crust)
III. All the elements present in a sample of earth’s crust are also present in a sample of living tissue
IV. Living organisms have more Ca,Mg,Na in them than inanimate object